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Re: What amount did Jean earn from the commission on her sales [#permalink]
18 Dec 2012, 05:35
This post received KUDOS
What amount did Jean earn from the commission on her sales in the first half of 1988 ?
(1) In 1988 Jean's commission was 5 percent of the total amount of her sales. Nothing about the amount of Jean's sales. Not sufficient.
(2) The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half. If the average sales per month in the first half was x, then the total sales for the year was 6x+6(x+10,000). Not sufficient.
(1)+(2) Commission = 0.05*(6x+6(x+10,000)), we need the value of x to answer the question. Not sufficient.